<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
{#这是jinja2的注释写法#}
hello2 {{ session.get('username') }}
<p>文章标题: {{article.title}}</p>
<p>文章阅读量: {{article.count}}</p>
</body>
</html>